#include <iostream>
#include <vector>
#include <memory>
 
struct SmallWorld {
	int some_small_world_stuff;	
};
 
struct Entity {
	std::shared_ptr<SmallWorld> world;
};
 
 
struct Faction {
	std::vector<std::shared_ptr<Entity>> entities;
};
 
struct World : public SmallWorld {
	std::vector<std::shared_ptr<Faction>> factions;
};
 
int main() {
	auto world = std::make_shared<World>();
	world->some_small_world_stuff = 1337;
	auto fac1 = std::make_shared<Faction>();
	auto ent1 = std::make_shared<Entity>();
 
	ent1->world= world;
	fac1->entities.emplace_back(ent1);
	world->factions.emplace_back(fac1);
 
	std::cout << world->factions[0]->entities[0]->world->some_small_world_stuff << std::endl;
}

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